My current and last carb both caused issues (engine trying to die down) when slowing down to stop quickly. Once I started lowering the float levels, this issue got better each time I lowered the floats.
I started with the manufatured recommendation but then started lowering the floats 1/4 turn at a time until this issue went away. Both carbs ended up with the float levels below the sight glasses (Holley & a QF).